Patent US1820857A successfully refreshed from Google Patents.
US3735906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable molten metal nozzle structure
Assignee: JUTEN M A WASHINGTON
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Filing: 1971-03-15
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Granted: 1973-05-29
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Expires: 1991-03-15
Abstract
Abstract A readily replaceable ceramic nozzle and well ring for use in ladles carrying molten metal to cooperate with a vertically moveable valve stop rod to control the flow of molten metal, the nozzle being of funnel-shape with the conical mouth providing a well ring and with the well ring and the tubular stem supported in a nozzle receiving block means of preformed ceramic material with the stem portion of the funnel extending through the block means to outside of the metal casing of the ladle, the stem having retaining means such as screw threads on its outer end cooperating with screw threads on a tubular nozzle extension with the tubular nozzle extension serving the dual function of retaining the nozzle in position and also preventing splattering of the molten metal. The nozzle receiving block means has a nozzle receiving opening conically enlarged at its upper end so that a minimum of fire clay mud seal is required to seal the funnel shaped nozzle in the nozzle receiving block means, the space between the rim of the block means and the fire brick lining of the ladle being filled with mortar-like material such as HELSPOT so that a minimum of moisture is used in the plastic sealing materials when replacing the nozzle whereby the nozzle can be used immediately instead of requiring the long waiting period for setting up and hardening of the plastic materials.
Inventors
- 👤 J E Zettlempoyer
- 👤 C F Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:57
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; B22D41/56
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
306 words
A readily replaceable nozzle structure for pouring molten metal from a brick lined pouring ladle comprising nozzle receiving block means of preformed refractory material having a bore therethrough with the upper end of said bore of said block means having a conically upwardly diverging mouth, a replaceable nozzle of preformed refractory material having a bore therethrough and a conically upwardly diverging well portion opening upwardly therefrom, said nozzle having an exterior corresponding to the said conically upwardly diverging mouth opening to said nozzle receiving block, said nozzle having a stem portion of sufficient length to project through said pouring ladle, said exterior of said nozzle being closely positioned with respect to said bore through said nozzle receiving bore of said block means whereby a minimum of fireclay mud is required to seal the space between said nozzle and saiD nozzle receiving block means requiring a minimum of replacement time, said block means being covered by mortar-like material whereby said block means may be positioned within said brick lining of said ladle and secured in place in said lining with said mortar-like material, said nozzle being coated on its exterior with fireclay mud and said nozzle inserted from above through said bore of said nozzle receiving block means and said nozzle pressed into position causing said fireclay mud to ooze out between said nozzle and said block means thereby sealing the joint between said nozzle and said nozzle receiving block means, and said nozzle and said mortar-like material completely covers said upper end of said block means and extends to said brick lining thereby protecting said block means and extends to said brick lining thereby protecting said block means from contact with said molten metal whereby metal will not contact said block and said nozzle may be replaced many times without requiring replacement of said block means.
Claim 2
Dependent Claim
306 words
A readily replaceable nozzle structure for pouring molten metal from a brick lined pouring ladle comprising nozzle receiving block means of preformed refractory material having a bore therethrough with the upper end of said bore of said block means having a conically upwardly diverging mouth, a replaceable nozzle of preformed refractory material having a bore therethrough and a conically upwardly diverging well portion opening upwardly therefrom, said nozzle having an exterior corresponding to the said conically upwardly diverging mouth opening to said nozzle receiving block, said nozzle having a stem portion of sufficient length to project through said pouring ladle, said exterior of said nozzle being closely positioned with respect to said bore through said nozzle receiving bore of said block means whereby a minimum of fireclay mud is required to seal the space between said nozzle and saiD nozzle receiving block means requiring a minimum of replacement time, said block means being covered by mortar-like material whereby said block means may be positioned within said brick lining of said ladle and secured in place in said lining with said mortar-like material, said nozzle being coated on its exterior with fireclay mud and said nozzle inserted from above through said bore of said nozzle receiving block means and said nozzle pressed into position causing said fireclay mud to ooze out between said nozzle and said block means thereby sealing the joint between said nozzle and said nozzle receiving block means, and said nozzle and said mortar-like material completely covers said upper end of said block means and extends to said brick lining thereby protecting said block means and extends to said brick lining thereby protecting said block means from contact with said molten metal whereby metal will not contact said block and said nozzle may be replaced many times without requiring replacement of said block means.
Claim 3
Dependent Claim
35 words
The invention according to claim 1 in which the tubular stem section of the nozzle is provided with fastening means at its end opposite the conically diverging mouth to be secured outside of the ladle.
Claim 4
Dependent Claim
55 words
The invention according to claim 2 in which the fastening means on the tubular stem includes screw threads and a tubular nozzle extension having cooperating screw threads adapted to be screwed into the threads of the tubular stem of the nozzle with the bore of the extension in alignment with the bore of the nozzle.
Claim 5
Dependent Claim
111 words
The invention according to claim 2 in which the mouth of the nozzle is above the top of the nozzle receiving block and the fastening means includes a U-shaped wedge and the tubular stem section is provided with grooves to receive the legs of the wedge to draw the nozzle into position and thereby force said fireclay and mud providing sealing plastic material over the upper edge of said nozzle preventing molten metal from contacting said block means, the sealing plastic oozing out from the upper edge of said nozzle completely sealing said nozzle receiving block from molten metal whereby many nozzles may be replaced in a single nozzle receiving block.
Claim 6
Dependent Claim
64 words
The invention according to claim 1 in which the nozzle projects outwardly of the ladle exterior and means are applied to the portion of the nozzle exterior of the ladle to urge the nozzle to operative position and cause the mud seal to ooze out from the joint between the exterior of the nozzle and the upwardly opening conical bore portion of the block.
Claim 7
Dependent Claim
92 words
The invention according to claim 5 in which the means to secure the nozzle is a U-shaped wedge and the portion of the nozzle exterior to the ladle has grooves for receiving the U-shaped wedge to press the nozzle into effective contact with fireclay mud seal to provide an effective seal between said nozzle and said block means and Hellspot is shaped above said fireclay mud seal overlies a portion thereof, said nozzle being of a height above the top of said block means when said nozzle is in its operative position.
Claim 8
Dependent Claim
21 words
The invention according to claim 1 in which the top of the nozzle extends above the top of the block means.
Claim 9
Dependent Claim
64 words
The invention according to claim 1 in which said nozzle includes a tubular stem extending below said block means and said nozzle and block means are mounted in a ladle having a fire brick lining with a minimum of mortarlike material between said fire brick and said block means and a minimum of fire clay mud seal between said block means and said nozzle.
Claim 10
Dependent Claim
27 words
The invention according to claim 1 in which the block means includes a collar flange of larger transverse dimension than the transverse dimension of the block means.
Claim 11
Dependent Claim
57 words
A nozzle structure according to claim 1 in which the block means includes a portion of large radial dimension and a nozzle well receiving body of smaller radial dimension, said nozzle receiving block being of approximately the maximum radial dimension of the nozzle mouth wheReby erosion by pouring metal occurs in the well ring of the nozzle.
Claim 12
Independent Claim
244 words
A method of installing and replacing nozzles in a ladle for molten metal comprising securing a nozzle receiving block means of preformed refractory material having a bore therethrough with the upper end of said bore having a conically upwardly diverging mouth into a nozzle receiving opening of a ladle lining and forming a smooth contour from said nozzle receiving block means to said lining of said ladle with a mortar-like settable plastic material thereby securing said block means permanently in position, inserting a replaceable nozzle of preformed refractory material, said nozzle having a bore therethrough and a conically upwardly diverging well portion opening upwardly thereform, said nozzle having an exterior corresponding to the said conically upwardly diverging mouth opening of said nozzle receiving block means, applying plastic sealing material such as fireclay mud seal to the contacting surfaces of said nozzle and said nozzle receiving block and thereafter inserting said nozzle so the lower stem end thereof projects near the outer surface of said ladle and applying a force to said nozzle to assure proper sealing contact between the outer periphery of said nozzle and said bore through said nozzle receiving block which receives said nozzle, and thereafter applying mortar like material between said nozzle, and said nozzle receiving block means to completely cover said nozzle receiving block means and smoothly merging with said ladle lining whereby said molten metal does not contact the block means and said nozzle may be replaced many times.
Claim 13
Independent Claim
244 words
A method of installing and replacing nozzles in a ladle for molten metal comprising securing a nozzle receiving block means of preformed refractory material having a bore therethrough with the upper end of said bore having a conically upwardly diverging mouth into a nozzle receiving opening of a ladle lining and forming a smooth contour from said nozzle receiving block means to said lining of said ladle with a mortar-like settable plastic material thereby securing said block means permanently in position, inserting a replaceable nozzle of preformed refractory material, said nozzle having a bore therethrough and a conically upwardly diverging well portion opening upwardly thereform, said nozzle having an exterior corresponding to the said conically upwardly diverging mouth opening of said nozzle receiving block means, applying plastic sealing material such as fireclay mud seal to the contacting surfaces of said nozzle and said nozzle receiving block and thereafter inserting said nozzle so the lower stem end thereof projects near the outer surface of said ladle and applying a force to said nozzle to assure proper sealing contact between the outer periphery of said nozzle and said bore through said nozzle receiving block which receives said nozzle, and thereafter applying mortar like material between said nozzle, and said nozzle receiving block means to completely cover said nozzle receiving block means and smoothly merging with said ladle lining whereby said molten metal does not contact the block means and said nozzle may be replaced many times.
Claim 14
Dependent Claim
39 words
The invention according to claim 11 in which said nozzle includes said stem which is projected beyond the exterior of said ladle and a fastening means is applied to said stem to urge and secure said nozzle in position.
Claim 15
Dependent Claim
40 words
The invention according to claim 11 in which the nozzle is supported on a long rod extending downwardly from the upper open end of the ladle to completely eliminate the time required for a workman to be within the ladle.
Claim 16
Dependent Claim
105 words
The method according to claim 11 in which the nozzle receiving block has a funnel-shaped bore therethrough, and the nozzle is of funnel shape corresponding to the funnel-shaped bore with the conical mouth of the nozzle forming the well ring, the plastic fireclay mud seal being applied in a thin layer between the outer surface of the well ring and the conical mouth of the funnel-shaped bore whereby a minimum of plastic seal effectively seals the nozzle, the nozzle being movable into sealing position by force applied to the lower end of the nozzle, whereby the nozzle can be replaced in a minimum of time.
Claim 17
Dependent Claim
145 words
The invention according to claim 11 in which said preformed ceramic block has a substantially conical bore therethrough extending substantially the length thereof and said removable nozzle has a corresponding exterior periphery and a projection of sufficient length to extend outside of said ladle and such projection includes a groove on each side thereof and a U-shaped wedge element is passed into said grooves to effectively urge said nozzle downwardly into final position, the upper end of said nozzle extending above the preformed ceramic block and the settable plastic completely covers the inwardly exposed portions of the ceramic bloc means so that an old used nozzle may be readily removed by removing the wedge and forcing the old nozzle upwardly without damaging said block means and a new nozzle may be inserted from above without requiring a substantial time of a workman within the ladle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |